#include <QCoreApplication>
#include <iostream>
using namespace std;

int main(int argc, char *argv[])
{
    int chislo;
    cin>>chislo;
    if (chislo<0)
       cout<<"otritsatel'noe ";
    if (chislo>0)
        cout<<"polozhitel'noe ";
    if (chislo==0)
       cout<<"nulevoe ";
    if (chislo%2==0)
        cout<<"chetnoe ";
    else
        cout<<"nechetnoe ";
    QCoreApplication a(argc, argv);

    return a.exec();
}
